/Engine/Source/Runtime/Slate/Public/Framework/Docking/TabManager.h
Try to open tab if it is closed at the last known location. If it already exists, it will draw attention to the tab.
The existing or newly spawned tab instance if successful.
virtual [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SDockTab](API\Runtime\Slate\Widgets\Docking\SDockTab) > TryInvokeTab ( const [FTabId](API\Runtime\Slate\Framework\Docking\FTabId) & TabId, bool bInvokeAsInactive )